/Engine/Plugins/Developer/Concert/ConcertSync/ConcertSyncClient/Source/ConcertSyncClient/Public/IConcertClientPackageBridge.h
Register a package filter to exclude/include certain packagins from the session.
void RegisterPackageFilter ( [FName](API\Runtime\Core\UObject\FName) FilterName, [FPackageFilterDelegate](API\Plugins\ConcertSyncClient\FPackageFilterDelegate) FilterHandle )